Abstract：
AIM OF THE STUDY:Artemisia vestita is a common traditional Tibetan medicinal plant which has been used widely in China for treating various inflammatory diseases. Since little is known about its active components, the purpose of this study was to isolate and identify the immunosuppressive compounds from Artemisia vestita. MATERIALS AND METHODS:A bioassay-guided isolation was performed with picryl chloride-induced contact hypersensitivity in mice. MTT assay and Flow cytometric analysis were used for determining Con A-induced lymphocyte proliferation and CD25 expression in T cells, respectively. RESULTS:The ethanol extract of the Artemisia vestita was found to possess significant inhibitory activity against the picryl chloride-induced contact hypersensitivity in mice. Then 4 fractions were isolated by macroporous adsorption resin and one of these fractions (AV3), which showed the highest activity in in vivo test, was further subjected to column chromatography. Nine known flavones were isolated and identified as pectolinarigenin (1), jaceosidin (2), cirsilineol (3), cirsimaritin (4), hispidulin (5), quercetin (6), 6-methoxytricin (7), acacetin (8), and apigenin (9). The structures of the 9 flavones were elucidated by spectral techniques. All the compounds were evaluated for their inhibitory activity on the proliferation and activation of T cells in vitro. Among the 9 flavones, cirsilineol (3), 6-methoxytricin (7) and apigenin (9) significantly inhibited T cell proliferation and activation in the bioassays. CONCLUSION:The result suggests that cirsilineol, 6-methoxytricin and apigenin are the major active components in Artemisia vestita.
journal_name
J Ethnopharmacoljournal_title
Journal of ethnopharmacologyauthors
Yin Y,Gong FY,Wu XX,Sun Y,Li YH,Chen T,Xu Qdoi
10.1016/j.jep.2008.07.029subject
Has Abstractpub_date
2008-10-30 00:00:00pages
1-6issue
1eissn
0378-8741issn
1872-7573pii
S0378-8741(08)00394-2journal_volume
120pub_type
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